Blowtorch



y Blowtorches, .of which I hereby declare they burner is more economical inits use of fueh- UNITED STATES vISATEIW OFFICE.

FREDERICK E. GERSTENBERGER, o

' lf imow'ronoii.

Be it known that I, FREDERICK E. GERSTE'N- BERGER,'a citizenof the United States, and resident of South Euclid, in thecountyv of Cuyahoga and State of Ohio, `have invented certain new and .useful Improvements in following to be a full, clear, and exact del scription, such as will enable others skilled in the art to which and use the same.

The objectsl of the invention are to provide an improved form of blow pi e, s`o`constructed that a gas of superior qua ity .can be produced therein, which absorbs a maximumy amount of oxygen and by increasing the degree of temperature and adding to the init appertains to make tensity of the flame producesk more heat units, with a given amountof distillate' or otherwliquid fuel. For thisy reason', the

The Asuper-heating of the fuel vapor vand pre-heating of the air also places `'the carbonl content in the fuel in vcondition to absorb oxygen `readily from the atmosphere and hence a high degree of temperature is' obtained with a less amount of fuelthan in ordinary blow pipe construction.

'Ihe construction also permits the Haine to be made luminous or non-luminous by, con-` trolling the supply ofair tothe burner.

lAn expanding chamber is provided mounted upon a super-heating chamber, containing hydrogen evolving 'ingredients which tends to break up the molecules in the fuel and tosatu'rate they vapor `with highly `.iniammable, agents and increase its combustible properties.

The invention includes filtering means in thejdelivery" pipe for collecting all vforeign substances or impurities Vthat might clog the burner.i It includes the use of` two valves,v one for controlling the fuel supply'to' the blow torch or pipe,;` and a separate valve-for controlling the size of the burner jet orifice.

vIt includes an air pressure pump,'which may beattached to theflling cap which is insertedfin the dished bottoml of the recepf tacle which forms ai; funnel for lling the receptacle vor the pump may be inserted lateral y in the side wall of thereceptacle and will then form a handle for'th'ef instrument.

The invention isf hereinafter 'more'fully `described shown in the accompanying draw# Application lked .Tune 1,

F SOUTH EUCLID, orrIof Specication of Letters Patent. 27,1921., isis. ksensi No. 304,492. p,

`Inthe drawings/"Figurel is averticalv longitudinal section of the device; Figi. 2 is t duced size; Fig. 3 is ing a laterally introduced air-pump which may be used as a handle for the device; Fig. 4 1s an enlarged section of the burner valve; F 1g. 5 "1s a transverse section of the Vaporiz- 1ng and superheating chamber employed in the device; Fig. 6 is nalsection showing the'locking device for the pump plunger and passage therethrough.

VIn these drawings A, represents the receptacle lwhich ispreferably polygonal in cross section, for the reason that the walls are made more yrigid and the appearance is im* proved thereby, and it is preferably made more than'twice as tall vas wide to adapt it for storing inl a craftsmanstool kit,4 and the preferred form of planof the same realso to adapt itfor use with one hand in work inboth vertical in a partiand J is a second capl working valveG and opening in the end of the pumpk A second valve is vformed by the piston itself when the device is not in use to prevent the escape of fuel or gas. This is formed by the projection S upon the partition Iwhich enters the recess Sy in the piston head. Y l

The passage S2 in a projection when the projectionenters this recess.

The parts are screwl threaded to permit of locking the plugger tothe partition to` pre-cy vent theplunger Vfrom vice is not in use.

aside elevation showan enlarged longitudiump.y G is S is closed p falling when thefdev The airinlet passage throughthe piston l rod can be" mostconveniently closed by the thumb toprevent the escape of air as shown in Fig. 1. Y

'A' packing ring or rings of fiberfor the piston Vare shown at L. M is thevertical outlet` passage which is controlled by meansk of a valve Above t the valve is shown the annular (va-- porizing, expandmgfa'nd superheating rchamber O, and asupply pipe P, leading from the highest levelthereof to theburner nozl zle Q. In the lower portion of the annularV chamber O is shown a collection of eleme'nts R, such as aluminum fragments or alloys.

and superheating chamber for the fu'el oil as it rises from the lower level. ,Ati the highest level the outlet orA fuelV supply pipe extends downwardly andcornmunicates with the burner orifice which.disohargesfaxially and through the center 4of the combined su-` perheating and expanding` lChamber. The the walls of this chamber space inclosed by j can be designated the retort passage or zone, through which in which the rate of speed of passage flame is controlled bymeans of the able perforated baffle plate` "Thebafle plate U has its periphery threaded to engage the interiorly threaded opening ofthe expanding and superheating chamber O and the said batilewhichis adapted to be rotated to adjust it inwardly and outwardly with of the reference to the burner nozzle is provided;

with a central opening., Mounted en the supply pipe Pis a revoluble plate P which is adapted, to project upwardly asA illus-V trated in full lines in Fig. l-of the. draw-` ings and which isalso adapted to be downwardly'in front ofthe opening ofthe expanding and superheating chamber 0, as illustrated in dotted linesin Fig. L The revoluble plate P .servesv to contr-'01H the amount of atmospheric air suppliedr to .the flame. By means of this baffle plate, tiple number of changes can be made in the size of the flame and in the intensity of its swung heat units, which it produces, in coperastion withthe action of the burner valve Vvat Q.

In the gas supply passage leading to, the I burner orifice, filtering material is provided at XV such a wire gauze made from; copper which prevents 4the, burnerr from being clogged with foreign matter.

AThe burner orifice is controlledby of a needle valveJ of a peculiar shape by means of whieh the jet produced, will either be expanded into a conical form-,or contracted to a stra1g ,htl1ne.j4

Thehandle 'Il 's soplaced-as toibalance the load and to make it convenient forthe; oper-- ator to handle. This position-.isshownupon thetop of the reeeptacleas nea-r as gpossible to' the' center of gravity and relieves the strain upon thewrist o f the operator-heretofore most painful to bear. y

At Zl is sh'own a drippan'forlighting.v

. At X is shown fusible plugy'inthe outlet pipe. which fuses at a low temperature and prevents an explosion by gradially, {liberating the gasses when the fuse is burned out.l

In Fig. lgthe constructionof--the valvel controlling the burner orifice is shown.

`thevalve is closed, the effect of this enlarge- Y ment of the valve being to cause the pro- The upper part. of this chamber isunobf' structed and acts as a vaporizing, expanding` they llame is projected, and

adjustor perforation Q. `Alball' Q2`i'1'pon the valve isseated at Q3 over the outlet opening when jected spray to contract at the opening and toV change theshape of the spray fromr a straight line to'an `open cone.

rIhis causes it to` commingleymore freely with they atmosphere and .to make .the volume of iamedcontrollable without reducing the operating pressure."v The ball enlarge# ment alsovgives a more substantial support tothe needleY valve. l, i f j By means of the two valves and Q, lthe operator Visenabled-to` produce a homogeneous, mixture at all if/' arying atmospheric conditions of pressureand,temperature..

Having described the invention, what I, claim as new and lesire to secure by LettersV Patentis:A ,y ,j

ld In avblow pipe,` an annularpchambeij. a supply pipe for, fuel oil Vunder pressure leading intoftkhe lower part of said chamber, a ysupply, pipe for, fuel gas leading from the upper part of said chamber, a burner nozzle in said fuel gas, supply .pipe arranged to1 dischargel axially into said chamber, andL supplying heatv thereto for*'supe'rheating,v expanding and vaporizing said fuel soil therein, a vbaffle, plate in Ithe central opening in said annular chamber and adjustable longitudinallythereof. p y, A

2. In a blow pipe,an annular chamber, a,V supply lpipe4 for y fuel oil under pressure, leading into Vthe lower partof saidchamber, a; supply lpipe for .fuel gas leading from the upper partof said chamber, 4a. burner nozzle; in said lfuel ,gassupply pipe arranged to. discharge axiallyr intosaid 'ohamber, and supplying heat thereto for lsuperheating,J

nientary seat adapted` to. projectfthevapor in the form ofacone into. vthe oentral open-i ing insaid chamber, said valve' adustable tos/vary the-'form of the vapor jet, j 4.-. In avblowpipe in combfnation, a re-` ceptacle, a pump barreland a `piston and piston-rod therein, said piston androdproi vided with a continuous longitudinalopern. ing, aj 'transverseV partitionk extending ,en-1 tirely across said barrel in spaced relation with the ends of the same, a projectionon said partition, said partition and projection provided with a continuous opening, said serted in said opening and an exterior valvey for said opening.

5. In a blow pipe in combination, a receptacle, a puni barrel and a piston and piston rod therein, said piston and rod provided with a continuous longitudinal opening, a transverse partition extending entirely across said barrel, a projection on said partition, said partition and projection provided with a continuous openinv,

said piston provided with a recess, adapted to receive said projection, said piston closing said opening when said projection is inserted 1n said recess and an exterior valve for said opening, and an exterior cap for Saidbarrel said cap provided with an opening for air outlet and confining the partition in position.

6. In a blow pipe, an annular superheating, vaporizing and expanding chamber, a supply pipe for fuel oil thereto, an outlet pipe leading from the top of said chamber, a burner nozzle discharging into the central opening in said chamber, and a revoluble plate adapted to be interposed between said iiozzle and said central opening. In testimony whereof I hereunto set my hand this 14 day of April, 1919.

FREDERICK E. GERSTENBERGER.

In presence of- WM. M. MONROE, CHAs. F. Siria. 

